Aldervale Threshold Days by Year

3 fixed thresholds counted per year at Aldervale (ASN00009556): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Aldervale Thresholds

Aldervale: days with 10 mm (0.39 in) or more of precipitation in 95 years, most in 1926 with 36.
Aldervale: days with 25 mm (0.98 in) or more of precipitation in 93 years, most in 1916 with 7.
Aldervale: days with 50 mm (1.97 in) or more of precipitation in 25 years, most in 1945 with 2.
3 fixed thresholds have at least one qualifying day at Aldervale.

Days with 10 mm (0.39 in) or more of precipitation

95 years with a qualifying day

Days per year at Aldervale with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 36 in 1926.

Days with 10 mm (0.39 in) or more of precipitation per year at Aldervale
Year	Days	Decade average
1910	34	26.7
1911	19	26.7
1913	31	26.7
1914	14	26.7
1915	29	26.7
1916	25	26.7
1917	35	26.7
1924	19	22.8
1925	15	22.8
1926	36	22.8
1927	24	22.8
1928	21	22.8
1929	22	22.8
1930	17	20.6
1931	23	20.6
1932	26	20.6
1935	18	20.6
1936	17	20.6
1937	20	20.6
1938	23	20.6
1943	23	23.1
1944	20	23.1
1945	30	23.1
1946	24	23.1
1947	26	23.1
1948	21	23.1
1949	18	23.1
1950	22	22.1
1951	22	22.1
1952	18	22.1
1953	25	22.1
1954	18	22.1
1955	27	22.1
1956	27	22.1
1957	28	22.1
1958	16	22.1
1959	18	22.1
1960	22	22.8
1961	30	22.8
1962	15	22.8
1963	35	22.8
1964	29	22.8
1965	27	22.8
1966	18	22.8
1967	22	22.8
1968	15	22.8
1969	15	22.8
1970	20	21.5
1971	22	21.5
1972	14	21.5
1973	21	21.5
1974	31	21.5
1975	19	21.5
1976	24	21.5
1977	21	21.5
1980	25	17.9
1981	23	17.9
1982	13	17.9
1983	20	17.9
1985	18	17.9
1986	15	17.9
1987	10	17.9
1988	22	17.9
1989	15	17.9
1990	25	21.6
1991	18	21.6
1992	21	21.6
1993	15	21.6
1994	19	21.6
1995	25	21.6
1996	32	21.6
1997	19	21.6
1999	20	21.6
2000	15	17.3
2001	12	17.3
2002	17	17.3
2003	26	17.3
2004	12	17.3
2005	20	17.3
2006	13	17.3
2007	21	17.3
2008	16	17.3
2009	21	17.3
2010	9	14.3
2011	21	14.3
2012	15	14.3
2013	19	14.3
2014	14	14.3
2015	8	14.3
2016	16	14.3
2017	17	14.3
2018	12	14.3
2019	12	14.3
2020	17	15.5
2022	14	15.5

For each year, a bar from the first to the last day at Aldervale meeting 10 mm (0.39 in).

First to last qualifying date each year at Aldervale
Year	First date	Last date
1910	1910-04-21	1910-10-19
1911	1911-04-27	1911-10-19
1913	1913-02-15	1913-12-29
1914	1914-02-18	1914-11-22
1915	1915-01-16	1915-11-13
1916	1916-01-04	1916-11-20
1917	1917-01-28	1917-12-20
1924	1924-05-14	1924-10-10
1925	1925-05-22	1925-10-19
1926	1926-02-24	1926-10-21
1927	1927-03-13	1927-10-07
1928	1928-01-09	1928-10-21
1929	1929-02-16	1929-11-10
1930	1930-05-28	1930-09-21
1931	1931-04-13	1931-09-09
1932	1932-01-29	1932-10-29
1935	1935-04-03	1935-10-19
1936	1936-04-15	1936-09-30
1937	1937-04-20	1937-11-25
1938	1938-03-19	1938-12-04
1943	1943-02-01	1943-12-08
1944	1944-04-29	1944-12-06
1945	1945-03-27	1945-12-25
1946	1946-03-20	1946-12-23
1947	1947-04-16	1947-11-26
1948	1948-04-28	1948-12-24
1949	1949-02-02	1949-11-06
1950	1950-05-05	1950-12-27
1951	1951-02-14	1951-10-13
1952	1952-03-28	1952-11-01
1953	1953-02-02	1953-11-13
1954	1954-03-16	1954-11-11
1955	1955-02-17	1955-12-14
1956	1956-03-05	1956-12-05
1957	1957-04-21	1957-10-04
1958	1958-04-26	1958-09-22
1959	1959-05-03	1959-12-31
1960	1960-01-01	1960-09-22
1961	1961-01-26	1961-10-19
1962	1962-03-16	1962-12-29
1963	1963-01-10	1963-10-17
1964	1964-06-04	1964-12-20
1965	1965-03-26	1965-12-20
1966	1966-04-20	1966-12-27
1967	1967-04-15	1967-11-16
1968	1968-04-18	1968-10-15
1969	1969-03-13	1969-11-04
1970	1970-02-05	1970-11-04
1971	1971-02-06	1971-11-23
1972	1972-04-20	1972-10-28
1973	1973-01-11	1973-10-29
1974	1974-04-22	1974-11-18
1975	1975-03-08	1975-10-06
1976	1976-01-08	1976-11-21
1977	1977-05-16	1977-12-23
1980	1980-02-11	1980-11-02
1981	1981-03-06	1981-11-26
1982	1982-01-21	1982-09-15
1983	1983-04-22	1983-09-13
1985	1985-01-20	1985-11-08
1986	1986-02-21	1986-10-17
1987	1987-04-08	1987-09-27
1988	1988-04-29	1988-09-22
1989	1989-02-16	1989-08-30
1990	1990-03-26	1990-10-29
1991	1991-02-27	1991-12-26
1992	1992-02-08	1992-11-19
1993	1993-03-20	1993-10-02
1994	1994-05-12	1994-10-14
1995	1995-05-10	1995-12-25
1996	1996-05-31	1996-12-12
1997	1997-02-25	1997-09-06
1999	1999-05-06	1999-12-20
2000	2000-01-15	2000-09-06
2001	2001-05-06	2001-12-04
2002	2002-04-17	2002-11-01
2003	2003-02-17	2003-12-18
2004	2004-05-10	2004-08-12
2005	2005-03-19	2005-11-27
2006	2006-01-08	2006-12-20
2007	2007-01-03	2007-12-18
2008	2008-02-08	2008-12-22
2009	2009-02-26	2009-11-18
2010	2010-03-23	2010-11-10
2011	2011-01-06	2011-12-13
2012	2012-05-05	2012-12-29
2013	2013-05-02	2013-11-23
2014	2014-05-08	2014-09-22
2015	2015-03-18	2015-09-12
2016	2016-01-19	2016-10-08
2017	2017-02-10	2017-12-04
2018	2018-04-22	2018-08-28
2019	2019-03-08	2019-09-03
2020	2020-05-06	2020-11-10
2022	2022-04-11	2022-09-13

Every Fixed Threshold

Fixed thresholds at Aldervale
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
10 mm (0.39 in): Days with 10 mm or more rain	95	36	1926	14
25 mm (0.98 in): Days with 25 mm or more rain	93	7	1916	1
50 mm (1.97 in): Days with 50 mm or more rain	25	2	1945	2

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1910.

Download the Data

Data for Aldervale threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Aldervale Threshold Days by Year

Key Facts for Aldervale Thresholds

Days with 10 mm (0.39 in) or more of precipitation

Every Fixed Threshold

Download the Data

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